Method and system for generating indoor geomagnetic navigation reference map
A technology of geomagnetic navigation and generation system, which is applied in the directions of ground navigation, navigation, mapping and navigation, and can solve the problems of complex realization of geomagnetic field reference map, difficulty in updating and maintenance, etc.
Inactive Publication Date: 2018-09-07
中测高科(北京)测绘工程技术有限责任公司
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[0006] The invention provides a method for generating an indoor geomagnetic navigation reference map, which solves the technical problems of complex implementation of the measurement means in the prior art and difficulty in later update and maintenance of the geomagnetic reference map
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[0025] In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0026] Such as figure 1 A flow chart of a method for generating an indoor geomagnetic navigation reference map is provided in an embodiment of the present invention, including:
[0027] Step 101, building an indoor floor plan;
[0028] Step 102, establishing a coordinate system based on the pixel space of the indoor floor plan;
[0029] Step 103, on the basis of the completed indoor floor plan, draw the data collection road section, extract the start node and the end node according to the data collection road section, and establish the topological relationship between the node and the road section;
[0030] Step 104, determine the data collection road section, collect the three-component data of the geomagnetic field under the c...
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The invention relates to the field of indoor geomagnetic navigation and discloses a method and a system for generating an indoor geomagnetic navigation reference map. The method comprises the following steps: building an indoor plane graph, building a coordinate system based on pixel space of the indoor plane graph, drawing a data collection road section based on the built indoor plane graph, extracting an initial node and a terminal node according to the data collection road section, building a topological relationship between the nodes and the road section, determining the data collection road section, collecting three-component data of a geomagnetic field in a coordinate system of a smart phone at a uniform speed along the data collection road section through the smart phone, recording coordinates of the geomagnetic field, obtaining instantaneous posture parameters of the smart phone relative to an initial state according to real-time acquired posture information of the smart phone, performing coordinate conversion on the collected three-component data of the geomagnetic field according to the posture parameters, obtaining a three-component numerical value of the geomagnetic field in an absolute coordinate system, and storing the numerical value in a database to generate the indoor geomagnetic navigation reference map. The method and the system improve the update efficiency of the indoor geomagnetic navigation reference map and reduce the cost.
Description
technical field [0001] The invention relates to the field of indoor geomagnetic navigation, in particular to a method for generating an indoor geomagnetic navigation reference map. Background technique [0002] With the development of society, large shopping plazas, large office buildings, libraries, underground parking garages, large supermarket conference centers, hospitals, etc. have gradually become the main places for people to work, live, and entertain. It is often necessary to determine the current location information and reach the destination route information, which requires an indoor navigation means to achieve indoor positioning and navigation. [0003] At present, GPS positioning and navigation, which is widely used, is difficult to realize the communication between mobile terminals and satellites indoors due to the occlusion of buildings, and it is impossible to complete indoor precise positioning and navigation. In recent years, with the rapid development and...
Claims
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IPC IPC(8): G01C21/08G01C21/20
CPCG01C21/08G01C21/206
Inventor 范荣双王继周房慎冲陈丽张巍郑君
Owner 中测高科(北京)测绘工程技术有限责任公司